GEMM on Raspberry Pi (2)
Besides the nested loop, there are alternative ways to compute GEMM.
GEMM using GEMV
GEMM can be computed using GEMV as shown below.
GEMM using rank-1 update (GER)
GEMM can also be viewed as a series of rank-1 update (GER) operations.
If we don’t use GEMV or GER from a good BLAS and just use a naive loop, the performance can be even worse than our JPI loop.